Subsections

- Library
- Description
- Dialog Box
- Default properties
- Interfacing function
- Computational function (type 0)

##
Register

### Library

Linear

### Description

A discrete delay block. When activated, internal state is copied on the output and the input is copied into the internal state.

### Dialog Box

Set dollar block parameters |
initial condition | 0

- initial condition: Initial state of the discrete-time state

### Default properties

- always active: no
- direct-feedthrough: no
- zero-crossing: no
- mode: no
- number/sizes of inputs: 1 / 1
- number/sizes of outputs: 1 / 1
- number/sizes of activation inputs: 1 / 1
- number/sizes of activation outputs: 0 /
- continuous-time state: no
- discrete-time state: yes
- name of computational function: dollar

### Interfacing function

`scilab/macros/scicos_blocks/misc/DOLLAR_f.sci`

### Computational function (type 0)

          subroutine dollar(flag,nevprt,t,xd,x,nx,z,nz,tvec,ntvec,
         &     rpar,nrpar,ipar,nipar,u,nu,y,ny)
    c     Copyright INRIA

    c     Scicos block simulator
    c     Ouputs delayed input
    c
          double precision t,xd(*),x(*),z(*),tvec(*),rpar(*),u(*),y(*)
          integer flag,nevprt,nx,nz,ntvec,nrpar,ipar(*)
          integer nipar,nu,ny

    c
          do 5 j=1,nu
             if(flag.eq.1.or.flag.eq.6.or.flag.eq.4) then
                y(j)=z(j)
             elseif(flag.eq.2) then
                z(j)=u(j)
             endif
     5    continue
          end